Joints for pipes



UNITED STATES PATENT OFFICE.

W. YR. MAFFI-T, Ol TILKES-BARR, PENNSYLVANIA.

JOINTS FOR. PIPES.v

Specification forming part of' Letters Patent No. 46,808, dated March 14, 1865.-

To all whom Ait may concern:

.lle it known that I, W. It. MAFFIT, of \Vilkes.l3urr, in the county of Luzerne and Stato ot' Pennsylvania, have and Improved Joint for Pipes; and I do hereby declare that the'following is a full, clear, and exact description thereof, which will enableothers skilled in the art to make und use the same, reference being had to the Vaccompanyin g drawings,

forming part o'f this spcciiication, in which- Figure l represents a longitudinal central section of my invention when applied to pipes runningin'right lines. Fig. 2 is a similar section of the same when `the pipes deviate from a right line.

Similar letters of-reference indicate like.' o parts. o

The usual method of makingjoints of'pipes.

is to place the ipes inposition, and drive in hemp-yarnin t .-spacewhere thespigotie adjusts against the bel l. Then there is run in from two to three inches of lead and' calkedby means of a' hammer, the .mechanic having the earth dug away from the bell to allowr the use of the h ammer and calkingchisel on the under side.

This operation is tedious and expensive.

The object ot this invention is to supersede,

the old method by the 'use of a wooden ring prepared by proper machinery out of one solid piece, if the ring is small, or out of a- .number `of sections or staves when the ring is large, and applied to the spigot-end ofthe pipe in such' a. manner that by. the expansion or swelling of the ward in the bellatight joint produced, and furthermore the compressibility of the wood allows the pipes to assume an. angular position, or a position -deviating fromv a right line, without producing leakage; or, it' desired, the inuer'surface. of the wooden ring may be more or less convex,

to give the pipes a still better-chance to assume an angular position. A A representsthe wooden ring, whlch may bey made out of one solid piece, if desired, but

for large pipes itis preferable to make the same out of a number of section, or staves like -a pail or barrel. When the pipe is made to or der for my joint, the ring is introduced into the bell end, B, and the'spigot C of the. adjoiningend, being,` slightly tapering, is forced into it by means of a hydraulic press orother power. The bell B is providcd'with anannular groove,

a, .so that the compression of the wood when invented a new Yurate the'same with some material upon by gas.

the spigot is introduced, and the swelling of 'the same by coming in contact' with the water, will form a shoulder and prevent the disturbance of the joint bythe ram-or pressure ot' water.. Besides this, ahole, i, is made in the bell B, through which a suitable substance can be introduced to fill up any space between. the ringA'and the inner surface of the bell, caused by irregularities of pasting, and also as a preservation tothe wood.

To allow the pipe to be laid eurvedocca' sional joints are used Ahaving a convex lace, as shown in the drawings, but for pipes running in a right line the inner face of the ring must 'be ator slightly tapering, to facilitate theintroductionof the spigot, and if the pipe should` settle and deviate froma right line the wood' VAis allowed to expand on joint is not disturbed..

the other side, andthe 'It win be seen that the wood' 'can bepub-iu -the pipe outside ofthe ditch or at the'founde'ry,

andthe pipes can be constructed with great rapidity when introduced into the ditch. I norder to apply my joint to ordinary pipe proceed in-the following manner: -Before the 'spigot' end is introduced into; the bell, the wooden ring is placed round the outside of said spigot end Aand secured by a lapping of twine or wire at the 4end adjoining. the bell,` and' by a similar arrangement at the other end, or by a projection on the clamp f.

This clamp is placed around the pipe, back ot' the ring, and Vheld in position by one orzmorescrews or other means, so that when` the ring is introduced into the bell and the spigot end forced into posit-ion, the ring will not bemoved,:but remain on the spigot end of the'pipe, in proper position, until the endo'f the ppeis brought in contact wit-h'the bell.

It my ring is applied to gas-pipe to prevent escape of gasv through the* pores of the the wood lengthwise, it will lbe-necessary tols'at- Having thus described my invention, what I 4claim as new, and desire to secure 4by Letters- Patent, is l o o ,l

Connecting pipes in the mann-erand by the ,meansdescribed WV. R. MAFFIT.

compressedgon one and not acted 

